1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nlexa [21]
3 years ago
11

A + 2 = 6 Solving One and Two step Equations

Mathematics
2 answers:
Alex787 [66]3 years ago
4 0

Answer:

a = 4

Step-by-step explanation:

a + 2 = 6

Subtract 2 from both sides

a + 2 - 2 =  6 - 2

           a = 4

crimeas [40]3 years ago
4 0

Answer:

4

Step-by-step explanation:

6 - 2 = 4

You might be interested in
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.5
masya89 [10]

Answer:

z= \frac{3.44-2.54}{0.45}=2

P(X>3.44) = P(Z>2) = 0.025

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the grade points avergae of a population, and for this case we know the following properties

Where \mu=2.54 and \sigma=0.45

The empirical rule, also referred to as the three-sigma rule or 68-95-99.7 rule, is a statistical rule which states that for a normal distribution, almost all data falls within three standard deviations (denoted by σ) of the mean (denoted by µ). Broken down, the empirical rule shows that 68% falls within the first standard deviation (µ ± σ), 95% within the first two standard deviations (µ ± 2σ), and 99.7% within the first three standard deviations (µ ± 3σ).

So we can find the z score for the value of X=3.44 in order to see how many deviations above or belowe we are from the mean like this:

z= \frac{3.44-2.54}{0.45}=2

So the value of 3.44 is 2 deviations above from the mean, so then we know that the percentage between two deviations from the mean is 95% and on each tail we need to have (100-95)/2 = 2.5% , because the distribution is symmetrical, so based on this we can conclude that:

P(X>3.44) = P(Z>2) = 0.025

5 0
3 years ago
Boy ton's famous hot dogs can prepare hot dogs at a constant rate of 13 hot dogs/minute. how many hot dogs can boy ton's famous
lianna [129]
585 hotdogs in 45 minutes.
You can simply do 13 X 45
Because 13 is the amount of hotdogs a minute and 45 is the total time.
13 X 45 = 585

Hope this helped you
5 0
3 years ago
8x + 11 = 2(4x - 7) + 25<br> Step by step please!
Dimas [21]

Step-by-step explanation:

8x + 11=2(4x-7) + 25

8x + 11 = 8x - 14 + 25

8x + 11=8x- 14 + 14 +25 + 11

8x-8x + 11 -11 = 14 + 25 + 11

8x-8x =14 + 25 + 11

X = 50

3 0
3 years ago
What is the GCF of 2x4 and 4x2<br> a) 2x^2. B) 2x^4. C) 4x^2
Zinaida [17]

Answer:

a)\ \ \ 2x^2

Step-by-step explanation:

-Greatest common factor is defined as the greatest positive that divides a set of whole numbers evenly and without a remainder.

-Given the set 2x^4\ \ and \ \ 4x^2

we notice, that the GCF can't be an integer with the power of x greater than 2:

=>\frac{2x^4}{2x^2}=x^2\\\\=>\frac{4x^2}{2x^2}=2\\\\GCF= 2x^2

Since, there's no other positive integer than can evenly divide the set of quotients, the GCF is 2x^2

8 0
3 years ago
Can someone help me asap please
lutik1710 [3]

Answer:

The answer is $19.44

Step-by-step explanation:

First you have to find 25% of $28.80 (which is 7.20). Then, you subtract the $7.20 from your 28.80. You do that because you are getting a 25% discount. Then, you find 10% of $21.60 (your answer for the 25% discount) and you subtract 10% of $21.60. After that, you get your total of $19.44.

I hope you find this helpful.

8 0
3 years ago
Other questions:
  • Please help me, I don’t understand.
    15·1 answer
  • Shapes that always have perpendicular lines
    10·1 answer
  • If 1200 cm^2 of material is available to make a box with a square base and an open top find the largest possible volume of the b
    6·1 answer
  • What is the sum of 3.026 and 25.87?
    8·2 answers
  • Select ALL the correct answers.
    9·1 answer
  • Which is the graph of the parent function f(x) = x2?
    12·1 answer
  • Find the perimeter and the area of the polygon with the given vertices. A (12,2) B (12,13) C (15,13) D (15,2)
    7·1 answer
  • BAG 1
    7·1 answer
  • I’m gonna be asking a lot of these so if your good at these then watch out for more! :)
    10·2 answers
  • I need help please quickly ​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!